A new iterative algorithm to reconstruct the refractive index
文献类型：期刊论文
| 作者 | Liu YJ(刘宜晋); Zhu PP(朱佩平) ; Chen B(陈彬); Wang JY(王佳怡); Yuan QX(袁清习); Huang WX(黄万霞); Shu H(舒航); Li ER(李恩荣); Liu XS(刘小松); Zhang K(张凯)
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| 刊名 | PHYSICS IN MEDICINE AND BIOLOGY
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| 出版日期 | 2007 |
| 卷号 | 52期号:12页码:L5-L13 |
| 通讯作者 | Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China ; Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 英文摘要 | The latest developments in x-ray imaging are associated with techniques based on the phase contrast. However, the image reconstruction procedures demand significant improvements of the traditional methods, and/or new algorithms have to be introduced to take advantage of the high contrast and sensitivity of the new experimental techniques. In this letter, an improved iterative reconstruction algorithm based on the maximum likelihood expectation maximization technique is presented and discussed in order to reconstruct the distribution of the refractive index from data collected by an analyzer-based imaging setup. The technique considered probes the partial derivative of the refractive index with respect to an axis lying in the meridional plane and perpendicular to the propagation direction. Computer simulations confirm the reliability of the proposed algorithm. In addition, the comparison between an analytical reconstruction algorithm and the iterative method has been also discussed together with the convergent characteristic of this latter algorithm. Finally, we will show how the proposed algorithm may be applied to reconstruct the distribution of the refractive index of an epoxy cylinder containing small air bubbles of about 300 mu of diameter. |
| 学科主题 | Engineering; Radiology, Nuclear Medicine & Medical Imaging |
| 类目[WOS] | Engineering, Biomedical ; Radiology, Nuclear Medicine & Medical Imaging |
| 研究领域[WOS] | Engineering ; Radiology, Nuclear Medicine & Medical Imaging |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247047800021 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240282]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_加速器中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu YJ,Zhu PP,Chen B,et al. A new iterative algorithm to reconstruct the refractive index[J]. PHYSICS IN MEDICINE AND BIOLOGY,2007,52(12):L5-L13. |
| APA | 刘宜晋.,朱佩平.,陈彬.,王佳怡.,袁清习.,...&Wu, ZY.(2007).A new iterative algorithm to reconstruct the refractive index.PHYSICS IN MEDICINE AND BIOLOGY,52(12),L5-L13. |
| MLA | 刘宜晋,et al."A new iterative algorithm to reconstruct the refractive index".PHYSICS IN MEDICINE AND BIOLOGY 52.12(2007):L5-L13. |
入库方式： OAI收割
来源：高能物理研究所
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